forked from OSchip/llvm-project
608 lines
17 KiB
C++
608 lines
17 KiB
C++
//===-- StringExtractorGDBRemote.cpp ----------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Utility/StringExtractorGDBRemote.h"
|
|
|
|
#include <ctype.h> // for isxdigit
|
|
#include <string.h>
|
|
|
|
StringExtractorGDBRemote::ResponseType
|
|
StringExtractorGDBRemote::GetResponseType() const {
|
|
if (m_packet.empty())
|
|
return eUnsupported;
|
|
|
|
switch (m_packet[0]) {
|
|
case 'E':
|
|
if (isxdigit(m_packet[1]) && isxdigit(m_packet[2])) {
|
|
if (m_packet.size() == 3)
|
|
return eError;
|
|
llvm::StringRef packet_ref(m_packet);
|
|
if (packet_ref[3] == ';') {
|
|
auto err_string = packet_ref.substr(4);
|
|
for (auto e : err_string)
|
|
if (!isxdigit(e))
|
|
return eResponse;
|
|
return eError;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'O':
|
|
if (m_packet.size() == 2 && m_packet[1] == 'K')
|
|
return eOK;
|
|
break;
|
|
|
|
case '+':
|
|
if (m_packet.size() == 1)
|
|
return eAck;
|
|
break;
|
|
|
|
case '-':
|
|
if (m_packet.size() == 1)
|
|
return eNack;
|
|
break;
|
|
}
|
|
return eResponse;
|
|
}
|
|
|
|
StringExtractorGDBRemote::ServerPacketType
|
|
StringExtractorGDBRemote::GetServerPacketType() const {
|
|
#define PACKET_MATCHES(s) \
|
|
((packet_size == (sizeof(s) - 1)) && (strcmp((packet_cstr), (s)) == 0))
|
|
#define PACKET_STARTS_WITH(s) \
|
|
((packet_size >= (sizeof(s) - 1)) && \
|
|
::strncmp(packet_cstr, s, (sizeof(s) - 1)) == 0)
|
|
|
|
// Empty is not a supported packet...
|
|
if (m_packet.empty())
|
|
return eServerPacketType_invalid;
|
|
|
|
const size_t packet_size = m_packet.size();
|
|
const char *packet_cstr = m_packet.c_str();
|
|
switch (m_packet[0]) {
|
|
|
|
case '%':
|
|
return eServerPacketType_notify;
|
|
|
|
case '\x03':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_interrupt;
|
|
break;
|
|
|
|
case '-':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_nack;
|
|
break;
|
|
|
|
case '+':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_ack;
|
|
break;
|
|
|
|
case 'A':
|
|
return eServerPacketType_A;
|
|
|
|
case 'Q':
|
|
|
|
switch (packet_cstr[1]) {
|
|
case 'E':
|
|
if (PACKET_STARTS_WITH("QEnvironment:"))
|
|
return eServerPacketType_QEnvironment;
|
|
if (PACKET_STARTS_WITH("QEnvironmentHexEncoded:"))
|
|
return eServerPacketType_QEnvironmentHexEncoded;
|
|
if (PACKET_STARTS_WITH("QEnableErrorStrings"))
|
|
return eServerPacketType_QEnableErrorStrings;
|
|
break;
|
|
|
|
case 'P':
|
|
if (PACKET_STARTS_WITH("QPassSignals:"))
|
|
return eServerPacketType_QPassSignals;
|
|
|
|
case 'S':
|
|
if (PACKET_MATCHES("QStartNoAckMode"))
|
|
return eServerPacketType_QStartNoAckMode;
|
|
if (PACKET_STARTS_WITH("QSaveRegisterState"))
|
|
return eServerPacketType_QSaveRegisterState;
|
|
if (PACKET_STARTS_WITH("QSetDisableASLR:"))
|
|
return eServerPacketType_QSetDisableASLR;
|
|
if (PACKET_STARTS_WITH("QSetDetachOnError:"))
|
|
return eServerPacketType_QSetDetachOnError;
|
|
if (PACKET_STARTS_WITH("QSetSTDIN:"))
|
|
return eServerPacketType_QSetSTDIN;
|
|
if (PACKET_STARTS_WITH("QSetSTDOUT:"))
|
|
return eServerPacketType_QSetSTDOUT;
|
|
if (PACKET_STARTS_WITH("QSetSTDERR:"))
|
|
return eServerPacketType_QSetSTDERR;
|
|
if (PACKET_STARTS_WITH("QSetWorkingDir:"))
|
|
return eServerPacketType_QSetWorkingDir;
|
|
if (PACKET_STARTS_WITH("QSetLogging:"))
|
|
return eServerPacketType_QSetLogging;
|
|
if (PACKET_STARTS_WITH("QSetMaxPacketSize:"))
|
|
return eServerPacketType_QSetMaxPacketSize;
|
|
if (PACKET_STARTS_WITH("QSetMaxPayloadSize:"))
|
|
return eServerPacketType_QSetMaxPayloadSize;
|
|
if (PACKET_STARTS_WITH("QSetEnableAsyncProfiling;"))
|
|
return eServerPacketType_QSetEnableAsyncProfiling;
|
|
if (PACKET_STARTS_WITH("QSyncThreadState:"))
|
|
return eServerPacketType_QSyncThreadState;
|
|
break;
|
|
|
|
case 'L':
|
|
if (PACKET_STARTS_WITH("QLaunchArch:"))
|
|
return eServerPacketType_QLaunchArch;
|
|
if (PACKET_MATCHES("QListThreadsInStopReply"))
|
|
return eServerPacketType_QListThreadsInStopReply;
|
|
break;
|
|
|
|
case 'R':
|
|
if (PACKET_STARTS_WITH("QRestoreRegisterState:"))
|
|
return eServerPacketType_QRestoreRegisterState;
|
|
break;
|
|
|
|
case 'T':
|
|
if (PACKET_MATCHES("QThreadSuffixSupported"))
|
|
return eServerPacketType_QThreadSuffixSupported;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 'q':
|
|
switch (packet_cstr[1]) {
|
|
case 's':
|
|
if (PACKET_MATCHES("qsProcessInfo"))
|
|
return eServerPacketType_qsProcessInfo;
|
|
if (PACKET_MATCHES("qsThreadInfo"))
|
|
return eServerPacketType_qsThreadInfo;
|
|
break;
|
|
|
|
case 'f':
|
|
if (PACKET_STARTS_WITH("qfProcessInfo"))
|
|
return eServerPacketType_qfProcessInfo;
|
|
if (PACKET_STARTS_WITH("qfThreadInfo"))
|
|
return eServerPacketType_qfThreadInfo;
|
|
break;
|
|
|
|
case 'C':
|
|
if (packet_size == 2)
|
|
return eServerPacketType_qC;
|
|
break;
|
|
|
|
case 'E':
|
|
if (PACKET_STARTS_WITH("qEcho:"))
|
|
return eServerPacketType_qEcho;
|
|
break;
|
|
|
|
case 'F':
|
|
if (PACKET_STARTS_WITH("qFileLoadAddress:"))
|
|
return eServerPacketType_qFileLoadAddress;
|
|
break;
|
|
|
|
case 'G':
|
|
if (PACKET_STARTS_WITH("qGroupName:"))
|
|
return eServerPacketType_qGroupName;
|
|
if (PACKET_MATCHES("qGetWorkingDir"))
|
|
return eServerPacketType_qGetWorkingDir;
|
|
if (PACKET_MATCHES("qGetPid"))
|
|
return eServerPacketType_qGetPid;
|
|
if (PACKET_STARTS_WITH("qGetProfileData;"))
|
|
return eServerPacketType_qGetProfileData;
|
|
if (PACKET_MATCHES("qGDBServerVersion"))
|
|
return eServerPacketType_qGDBServerVersion;
|
|
break;
|
|
|
|
case 'H':
|
|
if (PACKET_MATCHES("qHostInfo"))
|
|
return eServerPacketType_qHostInfo;
|
|
break;
|
|
|
|
case 'K':
|
|
if (PACKET_STARTS_WITH("qKillSpawnedProcess"))
|
|
return eServerPacketType_qKillSpawnedProcess;
|
|
break;
|
|
|
|
case 'L':
|
|
if (PACKET_STARTS_WITH("qLaunchGDBServer"))
|
|
return eServerPacketType_qLaunchGDBServer;
|
|
if (PACKET_MATCHES("qLaunchSuccess"))
|
|
return eServerPacketType_qLaunchSuccess;
|
|
break;
|
|
|
|
case 'M':
|
|
if (PACKET_STARTS_WITH("qMemoryRegionInfo:"))
|
|
return eServerPacketType_qMemoryRegionInfo;
|
|
if (PACKET_MATCHES("qMemoryRegionInfo"))
|
|
return eServerPacketType_qMemoryRegionInfoSupported;
|
|
if (PACKET_STARTS_WITH("qModuleInfo:"))
|
|
return eServerPacketType_qModuleInfo;
|
|
break;
|
|
|
|
case 'P':
|
|
if (PACKET_STARTS_WITH("qProcessInfoPID:"))
|
|
return eServerPacketType_qProcessInfoPID;
|
|
if (PACKET_STARTS_WITH("qPlatform_shell:"))
|
|
return eServerPacketType_qPlatform_shell;
|
|
if (PACKET_STARTS_WITH("qPlatform_mkdir:"))
|
|
return eServerPacketType_qPlatform_mkdir;
|
|
if (PACKET_STARTS_WITH("qPlatform_chmod:"))
|
|
return eServerPacketType_qPlatform_chmod;
|
|
if (PACKET_MATCHES("qProcessInfo"))
|
|
return eServerPacketType_qProcessInfo;
|
|
break;
|
|
|
|
case 'Q':
|
|
if (PACKET_MATCHES("qQueryGDBServer"))
|
|
return eServerPacketType_qQueryGDBServer;
|
|
break;
|
|
|
|
case 'R':
|
|
if (PACKET_STARTS_WITH("qRcmd,"))
|
|
return eServerPacketType_qRcmd;
|
|
if (PACKET_STARTS_WITH("qRegisterInfo"))
|
|
return eServerPacketType_qRegisterInfo;
|
|
break;
|
|
|
|
case 'S':
|
|
if (PACKET_STARTS_WITH("qSpeedTest:"))
|
|
return eServerPacketType_qSpeedTest;
|
|
if (PACKET_MATCHES("qShlibInfoAddr"))
|
|
return eServerPacketType_qShlibInfoAddr;
|
|
if (PACKET_MATCHES("qStepPacketSupported"))
|
|
return eServerPacketType_qStepPacketSupported;
|
|
if (PACKET_STARTS_WITH("qSupported"))
|
|
return eServerPacketType_qSupported;
|
|
if (PACKET_MATCHES("qSyncThreadStateSupported"))
|
|
return eServerPacketType_qSyncThreadStateSupported;
|
|
break;
|
|
|
|
case 'T':
|
|
if (PACKET_STARTS_WITH("qThreadExtraInfo,"))
|
|
return eServerPacketType_qThreadExtraInfo;
|
|
if (PACKET_STARTS_WITH("qThreadStopInfo"))
|
|
return eServerPacketType_qThreadStopInfo;
|
|
break;
|
|
|
|
case 'U':
|
|
if (PACKET_STARTS_WITH("qUserName:"))
|
|
return eServerPacketType_qUserName;
|
|
break;
|
|
|
|
case 'V':
|
|
if (PACKET_MATCHES("qVAttachOrWaitSupported"))
|
|
return eServerPacketType_qVAttachOrWaitSupported;
|
|
break;
|
|
|
|
case 'W':
|
|
if (PACKET_STARTS_WITH("qWatchpointSupportInfo:"))
|
|
return eServerPacketType_qWatchpointSupportInfo;
|
|
if (PACKET_MATCHES("qWatchpointSupportInfo"))
|
|
return eServerPacketType_qWatchpointSupportInfoSupported;
|
|
break;
|
|
|
|
case 'X':
|
|
if (PACKET_STARTS_WITH("qXfer:auxv:read::"))
|
|
return eServerPacketType_qXfer_auxv_read;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 'j':
|
|
if (PACKET_STARTS_WITH("jModulesInfo:"))
|
|
return eServerPacketType_jModulesInfo;
|
|
if (PACKET_MATCHES("jSignalsInfo"))
|
|
return eServerPacketType_jSignalsInfo;
|
|
if (PACKET_MATCHES("jThreadsInfo"))
|
|
return eServerPacketType_jThreadsInfo;
|
|
if (PACKET_STARTS_WITH("jTraceBufferRead:"))
|
|
return eServerPacketType_jTraceBufferRead;
|
|
if (PACKET_STARTS_WITH("jTraceConfigRead:"))
|
|
return eServerPacketType_jTraceConfigRead;
|
|
if (PACKET_STARTS_WITH("jTraceMetaRead:"))
|
|
return eServerPacketType_jTraceMetaRead;
|
|
if (PACKET_STARTS_WITH("jTraceStart:"))
|
|
return eServerPacketType_jTraceStart;
|
|
if (PACKET_STARTS_WITH("jTraceStop:"))
|
|
return eServerPacketType_jTraceStop;
|
|
break;
|
|
|
|
case 'v':
|
|
if (PACKET_STARTS_WITH("vFile:")) {
|
|
if (PACKET_STARTS_WITH("vFile:open:"))
|
|
return eServerPacketType_vFile_open;
|
|
else if (PACKET_STARTS_WITH("vFile:close:"))
|
|
return eServerPacketType_vFile_close;
|
|
else if (PACKET_STARTS_WITH("vFile:pread"))
|
|
return eServerPacketType_vFile_pread;
|
|
else if (PACKET_STARTS_WITH("vFile:pwrite"))
|
|
return eServerPacketType_vFile_pwrite;
|
|
else if (PACKET_STARTS_WITH("vFile:size"))
|
|
return eServerPacketType_vFile_size;
|
|
else if (PACKET_STARTS_WITH("vFile:exists"))
|
|
return eServerPacketType_vFile_exists;
|
|
else if (PACKET_STARTS_WITH("vFile:stat"))
|
|
return eServerPacketType_vFile_stat;
|
|
else if (PACKET_STARTS_WITH("vFile:mode"))
|
|
return eServerPacketType_vFile_mode;
|
|
else if (PACKET_STARTS_WITH("vFile:MD5"))
|
|
return eServerPacketType_vFile_md5;
|
|
else if (PACKET_STARTS_WITH("vFile:symlink"))
|
|
return eServerPacketType_vFile_symlink;
|
|
else if (PACKET_STARTS_WITH("vFile:unlink"))
|
|
return eServerPacketType_vFile_unlink;
|
|
|
|
} else {
|
|
if (PACKET_STARTS_WITH("vAttach;"))
|
|
return eServerPacketType_vAttach;
|
|
if (PACKET_STARTS_WITH("vAttachWait;"))
|
|
return eServerPacketType_vAttachWait;
|
|
if (PACKET_STARTS_WITH("vAttachOrWait;"))
|
|
return eServerPacketType_vAttachOrWait;
|
|
if (PACKET_STARTS_WITH("vAttachName;"))
|
|
return eServerPacketType_vAttachName;
|
|
if (PACKET_STARTS_WITH("vCont;"))
|
|
return eServerPacketType_vCont;
|
|
if (PACKET_MATCHES("vCont?"))
|
|
return eServerPacketType_vCont_actions;
|
|
}
|
|
break;
|
|
case '_':
|
|
switch (packet_cstr[1]) {
|
|
case 'M':
|
|
return eServerPacketType__M;
|
|
|
|
case 'm':
|
|
return eServerPacketType__m;
|
|
}
|
|
break;
|
|
|
|
case '?':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_stop_reason;
|
|
break;
|
|
|
|
case 'c':
|
|
return eServerPacketType_c;
|
|
|
|
case 'C':
|
|
return eServerPacketType_C;
|
|
|
|
case 'D':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_D;
|
|
break;
|
|
|
|
case 'g':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_g;
|
|
break;
|
|
|
|
case 'G':
|
|
return eServerPacketType_G;
|
|
|
|
case 'H':
|
|
return eServerPacketType_H;
|
|
|
|
case 'I':
|
|
return eServerPacketType_I;
|
|
|
|
case 'k':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_k;
|
|
break;
|
|
|
|
case 'm':
|
|
return eServerPacketType_m;
|
|
|
|
case 'M':
|
|
return eServerPacketType_M;
|
|
|
|
case 'p':
|
|
return eServerPacketType_p;
|
|
|
|
case 'P':
|
|
return eServerPacketType_P;
|
|
|
|
case 's':
|
|
if (packet_size == 1)
|
|
return eServerPacketType_s;
|
|
break;
|
|
|
|
case 'S':
|
|
return eServerPacketType_S;
|
|
|
|
case 'x':
|
|
return eServerPacketType_x;
|
|
|
|
case 'X':
|
|
return eServerPacketType_X;
|
|
|
|
case 'T':
|
|
return eServerPacketType_T;
|
|
|
|
case 'z':
|
|
if (packet_cstr[1] >= '0' && packet_cstr[1] <= '4')
|
|
return eServerPacketType_z;
|
|
break;
|
|
|
|
case 'Z':
|
|
if (packet_cstr[1] >= '0' && packet_cstr[1] <= '4')
|
|
return eServerPacketType_Z;
|
|
break;
|
|
}
|
|
return eServerPacketType_unimplemented;
|
|
}
|
|
|
|
bool StringExtractorGDBRemote::IsOKResponse() const {
|
|
return GetResponseType() == eOK;
|
|
}
|
|
|
|
bool StringExtractorGDBRemote::IsUnsupportedResponse() const {
|
|
return GetResponseType() == eUnsupported;
|
|
}
|
|
|
|
bool StringExtractorGDBRemote::IsNormalResponse() const {
|
|
return GetResponseType() == eResponse;
|
|
}
|
|
|
|
bool StringExtractorGDBRemote::IsErrorResponse() const {
|
|
return GetResponseType() == eError && isxdigit(m_packet[1]) &&
|
|
isxdigit(m_packet[2]);
|
|
}
|
|
|
|
uint8_t StringExtractorGDBRemote::GetError() {
|
|
if (GetResponseType() == eError) {
|
|
SetFilePos(1);
|
|
return GetHexU8(255);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
lldb_private::Status StringExtractorGDBRemote::GetStatus() {
|
|
lldb_private::Status error;
|
|
if (GetResponseType() == eError) {
|
|
SetFilePos(1);
|
|
uint8_t errc = GetHexU8(255);
|
|
error.SetError(errc, lldb::eErrorTypeGeneric);
|
|
|
|
error.SetErrorStringWithFormat("Error %u", errc);
|
|
std::string error_messg;
|
|
if (GetChar() == ';') {
|
|
GetHexByteString(error_messg);
|
|
error.SetErrorString(error_messg);
|
|
}
|
|
}
|
|
return error;
|
|
}
|
|
|
|
size_t StringExtractorGDBRemote::GetEscapedBinaryData(std::string &str) {
|
|
// Just get the data bytes in the string as
|
|
// GDBRemoteCommunication::CheckForPacket()
|
|
// already removes any 0x7d escaped characters. If any 0x7d characters are
|
|
// left in
|
|
// the packet, then they are supposed to be there...
|
|
str.clear();
|
|
const size_t bytes_left = GetBytesLeft();
|
|
if (bytes_left > 0) {
|
|
str.assign(m_packet, m_index, bytes_left);
|
|
m_index += bytes_left;
|
|
}
|
|
return str.size();
|
|
}
|
|
|
|
static bool
|
|
OKErrorNotSupportedResponseValidator(void *,
|
|
const StringExtractorGDBRemote &response) {
|
|
switch (response.GetResponseType()) {
|
|
case StringExtractorGDBRemote::eOK:
|
|
case StringExtractorGDBRemote::eError:
|
|
case StringExtractorGDBRemote::eUnsupported:
|
|
return true;
|
|
|
|
case StringExtractorGDBRemote::eAck:
|
|
case StringExtractorGDBRemote::eNack:
|
|
case StringExtractorGDBRemote::eResponse:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool JSONResponseValidator(void *,
|
|
const StringExtractorGDBRemote &response) {
|
|
switch (response.GetResponseType()) {
|
|
case StringExtractorGDBRemote::eUnsupported:
|
|
case StringExtractorGDBRemote::eError:
|
|
return true; // Accept unsupported or EXX as valid responses
|
|
|
|
case StringExtractorGDBRemote::eOK:
|
|
case StringExtractorGDBRemote::eAck:
|
|
case StringExtractorGDBRemote::eNack:
|
|
break;
|
|
|
|
case StringExtractorGDBRemote::eResponse:
|
|
// JSON that is returned in from JSON query packets is currently always
|
|
// either a dictionary which starts with a '{', or an array which
|
|
// starts with a '['. This is a quick validator to just make sure the
|
|
// response could be valid JSON without having to validate all of the
|
|
// JSON content.
|
|
switch (response.GetStringRef()[0]) {
|
|
case '{':
|
|
return true;
|
|
case '[':
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
ASCIIHexBytesResponseValidator(void *,
|
|
const StringExtractorGDBRemote &response) {
|
|
switch (response.GetResponseType()) {
|
|
case StringExtractorGDBRemote::eUnsupported:
|
|
case StringExtractorGDBRemote::eError:
|
|
return true; // Accept unsupported or EXX as valid responses
|
|
|
|
case StringExtractorGDBRemote::eOK:
|
|
case StringExtractorGDBRemote::eAck:
|
|
case StringExtractorGDBRemote::eNack:
|
|
break;
|
|
|
|
case StringExtractorGDBRemote::eResponse: {
|
|
uint32_t valid_count = 0;
|
|
for (const char ch : response.GetStringRef()) {
|
|
if (!isxdigit(ch)) {
|
|
return false;
|
|
}
|
|
if (++valid_count >= 16)
|
|
break; // Don't validate all the characters in case the packet is very
|
|
// large
|
|
}
|
|
return true;
|
|
} break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void StringExtractorGDBRemote::CopyResponseValidator(
|
|
const StringExtractorGDBRemote &rhs) {
|
|
m_validator = rhs.m_validator;
|
|
m_validator_baton = rhs.m_validator_baton;
|
|
}
|
|
|
|
void StringExtractorGDBRemote::SetResponseValidator(
|
|
ResponseValidatorCallback callback, void *baton) {
|
|
m_validator = callback;
|
|
m_validator_baton = baton;
|
|
}
|
|
|
|
void StringExtractorGDBRemote::SetResponseValidatorToOKErrorNotSupported() {
|
|
m_validator = OKErrorNotSupportedResponseValidator;
|
|
m_validator_baton = nullptr;
|
|
}
|
|
|
|
void StringExtractorGDBRemote::SetResponseValidatorToASCIIHexBytes() {
|
|
m_validator = ASCIIHexBytesResponseValidator;
|
|
m_validator_baton = nullptr;
|
|
}
|
|
|
|
void StringExtractorGDBRemote::SetResponseValidatorToJSON() {
|
|
m_validator = JSONResponseValidator;
|
|
m_validator_baton = nullptr;
|
|
}
|
|
|
|
bool StringExtractorGDBRemote::ValidateResponse() const {
|
|
// If we have a validator callback, try to validate the callback
|
|
if (m_validator)
|
|
return m_validator(m_validator_baton, *this);
|
|
else
|
|
return true; // No validator, so response is valid
|
|
}
|